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2. Swivel - Wikipedia

   en.wikipedia.org/wiki/Swivel

   Swivels are also used in the nautical sector as an element of the anchor rode and in a boat mooring systems. With yachts, the swivel is most commonly used between the anchor and chain. There is a school of thought that anchor swivels should not be connected to the anchor itself, but should be somewhere in the chain rode. [4]

3. Rotary union - Wikipedia

   en.wikipedia.org/wiki/Rotary_union

   Rotary unions are used for heating or cooling the many processing rolls throughout the wide variety of applications. In addition, rotary unions for air and hydraulic service are used in winding and injection molding applications. Many of today's modern winding applications will also utilize electrical slip rings.

4. Rotary actuator - Wikipedia

   en.wikipedia.org/wiki/Rotary_actuator

   Hydraulic or pneumatic rotary actuator, using a rack and pinion Both hydraulic and pneumatic power may be used to drive an actuator, usually the larger and more powerful types. As their internal construction is generally similar (in principle, if not in size) they are often considered together as fluid power actuators. [ 2 ]

5. Hydraulic machinery - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_machinery

   Hydraulic power was used to operate cranes and other machinery in British ports and elsewhere in Europe. The largest hydraulic system was in London. Hydraulic power was used extensively in Bessemer steel production. Hydraulic power was also used for elevators, to operate canal locks and rotating sections of bridges.

6. List of John Deere tractors - Wikipedia

   en.wikipedia.org/wiki/List_of_John_Deere_tractors

   The R also incorporated live hydraulics. PowrTrol, as it was known, provided the operator the ability to lift equipment by the pull of a lever. A pump powered by the PTO clutch provided 1,800 psi (12 MPa) of hydraulic pressure to a lever controlled valve. At 45 hp (34 kW) at the drawbar and 50 hp (37 kW) at the belt, it was the most fuel ...

7. 20 useful and innovative gadgets to make life easier for ...

   www.aol.com/lifestyle/products-to-make-life...

   Adjustable Swivel Stool Chair. $40 at Walmart. ... elderly parents who live at home. ... It has a hydraulic lift and an adjustable handle under the seat so you can get the right height you need ...